From your Control Panel account page, click 'Web Sites', and then click the name of your website to manage Website Settings. Dotnetnuke is required to run under Integrated mode of ASP.Net 4.0. To make the website is under ASP.Net 4.0 Integrated Mode, click 'Extensions' tab and change ASP.NET to '4.0 (Integrated Pipeline)' in the drop-down box then 'save'.

7. Go to your website by web browser, you will see DNN installation page.